SU1425120A1 - Method of attenuating dynamic refraction of the eye in the far vision zone - Google Patents

Abstract

The invention relates to medicine, namely to ophthalmology. The purpose of the invention is to reduce the magnitude of dynamic refraction. For repeated discernment, a test object is presented — a dot laser glass installed in the front focal plane of the eye. The test object is repeatedly examined through a multi-pupillary diaphragm and a system of interchangeable lenses with a gradually decreasing optical power; a monovision speckle is obtained. The effect of diminishing dynamic refraction is determined by increasing the distance between the lenses.

Description

The invention relates to medicine, namely to bphthalmology.

The purpose of the invention is to reduce the magnitude of dynamic refraction.

The method is carried out as follows.

Before starting a training session, the selection of an optical, interchangeable lens system is carried out mono-cually. For this, the patient's refraction of the patient is determined by the vertical and horizontal and horizontal meridians. A patient in a standard universal spectacle frame in the position of a ledge is located three meters from the screen on which a test sample is projected as a laser point snapshot. A multi-pupillary diaphragm and two plus and two lenses are inserted into the lens holder of the spectacle frame; minus) 5 algebraic sum of which exactly corresponds to the subject's refraction.

The multi-pupillary diaphragm is made in the form of a flap with two rows of openings with a diameter of 0.8 mm and a distance between them of 2 mm. The second eye of the patient is closed by a shutter. In this case, the patient should see the test object in the form of a single light of a common point. The optical lens system is considered to be correctly selected if doubling cannot be compensated for by the muscular effort of the eye at a distance of 15-20 seconds between the lenses. If doubling occurs at a greater distance, it is necessary to increase the optical power of each of the lenses, but their algebraic sum should remain unchanged and equal to the refraction of the patient's eye.

If doubling is not compensated at a closer distance, it is necessary to weaken the dioptricity of the lens of the optical system. After selecting the optical system of the lenses, the diaphragm installed in the meridian with the highest refraction and the plus lens are placed on the end of the outer tube and secured with retainers. The minus lens is mounted on the end of the inner tube and secured with retainers. The inner tube is inserted into the outer tube, thus creating a lens system with smoothly varying refraction. The arms are connected with a belt stop to prevent the inner tube from falling out of the outer tube. Telescopic tubes are shifted to the position when the

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the fragment, plus and minus lenses are close to each other.

The patient takes the device, prepared for work, by the handles and brings the eyepiece to the eye. The second eye is closed by a flap. In this case, the patient observes a single image of the test object in the form of a point laser speckle. Then, holding the handle still, the patient begins to slowly move the handle away from himself: and as a result, move the negative lens away from the eye, thereby weakening the optical system. He is faced with the task of maintaining a single view of the test object in the form of a point laser speckle under conditions of weakening the optical power of the lens system, i.e. due to the muscular effort of the eye, it tends to compensate for the resulting doubling of the test object until the threshold value is reached. When reaching a distance at which the doubling cannot be compensated, the system returns to its original position and the exercise,; repeats. Similarly, training is carried out to weaken the second-hand refraction.

Exercises for 2–3 minutes, the effect of the exercise is assessed on a control scale. In the case of an effective workout, the distance between the lenses at the threshold value should be greater than that of the original.

Example. Pilot P., 32 years old. Diagnosis: mild myopia of both eyes. Refraction with cycloplegic OD-B 1.0; OS-0 0.75 D. The exercises were carried out to attenuate the refraction of the eye for 10 days, 6 minutes daily in 2 doses. After the training, the refraction of the right eye was 0 0.75 D, the left B 0.5 D. As a result of the development of the negative refraction reflex, the sharpness of the vision of the right and left eyes increased from 0.8 before training to 1.0 after them.

PRI me R 2 Pilot C ,, 32 years. Diagnosis; myopi .. weak degree of both eyes. Refraction before treatment. OD-0 1.5-5 OS - 9 1.5. Acuity of vision 0.8 per eye. The trainings were conducted in the same way. After treatment, there was a significant decrease in the amount of refraction in the right eye by 0.5 D, in the left eye by 1.0 D. The acuity of vision after treatment is 0.9 per eye.

1425120

The use of the invention permits the magnitude of dynamic refraction,

It is possible to improve the quality of vision in a summer- test-object in the form of a point-like composition, suffering from a myopia laser speckle, which the mouth will enable him to professionally infuse into the front focal

Noah rehabilitation. Plane eyes and many times

look through the multi-pupillary dia formula of the invention to a fragment and a system of interchangeable lenses with a floating method of attenuating dynamic decreasing optical power, refraction / eye in the distant view of a single vision of speckle, day by repeated discrimination, and determine the effect of reducing dyne test an object that is distinguished by a dynamic refraction at an increase in the fact that, in order to reduce the cost between the lenses.

Claims (1)

SUMMARY OF THE INVENTION A method for attenuating dynamic refraction of an eye in a far vision zone by repeatedly distinguishing a test object, characterized in that, in order to reduce the dynamic refraction, a test object is presented in the form of a point laser speckle, which is mounted in the front focal planes of the eye and are repeatedly examined through a multidisciplinary aperture and a system of interchangeable lenses with a gradually decreasing optical power, achieving a single speckle vision, and determine the effect of reducing dynamically minutes refraction to increase the distance between the lenses.